Nomenclature
Scientific Name:
Wahlenbergia congesta (Cheeseman) N.E.Br., The Gardeners' Chronicle 336 (1913) subsp. congesta
 Description

Mat-forming plant with sessile rosulate tufts of glossy glabrous leaves and subsessile white flowers. Leaves orbicular spathulate, 8—25 mm long, shallowly crenate-serrate, undulate or flat, narrowed to a thin flat petiole. Scape solitary from each rosette, 1—2 cm long in flower, elongating up to 5 cm in fruit. Flowers solitary, terminal, erect, white or palest blue, 12—15 mm diam. Corolla rotate-campanulate, 9—12 mm long, tube bowl-shaped, c. 4 × 5 mm, lobes 7 × 5 to 8 × 5 mm, ovate, obtuse. Calyx lobes 2 × 1 mm wide at base, triangular. Capsule globular, 6 mm diam. when mature. Seeds ellipsoid, glossy brown. Self-fertile in cultivation. FL Nov—Mar, FT Dec—Apr.

[Reproduced from Petterson (1997, New Zealand J. Bot. 35: 9–54) with permission from The Royal Society of New Zealand.]

 Biostatus
Indigenous (Endemic)
 Bibliography
Cheeseman, T.F. 1906: Manual of the New Zealand Flora. Government Printer, Wellington.
de Lange, P.J.; Rolfe, J.R.; Barkla J.W.; Courtney, S.P.; Champion, P.D.; Perrie, L.R.; Beadel, S.N.; Ford, K.A.; Breitwieser, I.; Schönberger, I.; Hindmarsh-Walls, R.; Heenan, P.B.; Ladley, K. 2018: Conservation status of New Zealand indigenous vascular plants, 2017. New Zealand Threat Classification Series. No. 22. [Declining]
de Lange, P.J.; Rolfe, J.R.; Champion, P.D.; Courtney, S.P.; Heenan, P.B.; Barkla, J.W.; Cameron, E.K.; Norton, D.A.; Hitchmough, R.A. 2013: Conservation status of New Zealand indigenous vascular plants, 2012. New Zealand Threat Classification Series 3. Department of Conservation, Wellington. [Naturally Uncommon]
Petrie, D. 1914 ("1913"): Descriptions of New Native Phanerogams. Transactions and Proceedings of the Royal Society of New Zealand 46: 32–39.
Petterson, J.A. 1997: Revision of the genus Wahlenbergia (Campanulaceae) in New Zealand. New Zealand Journal of Botany 35(1): 9–54.
The Gardeners' Chronicle